Results 231 to 240 of about 5,464,510 (283)

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

open access: yesAdvanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan   +6 more
wiley   +1 more source

A Swiss flag through the chest: a case report of a rare transmediastinal impalement. [PDF]

open access: yesInt J Surg Case Rep
Schumacher J   +3 more
europepmc   +1 more source

The Single-Cell Pediatric Cancer Atlas: Data portal and open-source tools for single-cell transcriptomics of pediatric tumors. [PDF]

open access: yesCell Genom
Hawkins AG   +13 more
europepmc   +1 more source

Using SEIPS 101 Tools to Model Surgical Count Processes. [PDF]

open access: yesJ Patient Saf
Meilan J   +7 more
europepmc   +1 more source

On-Orbit Recognition of Resident Space Objects by Using Star Trackers

open access: yesActa Astronautica, 2020
Abstract The paper focuses on the opportunity to use star sensors to help space situational awareness and space surveillance. Catalogs of orbiting satellites around Earth are usually established on ground-based measurements that rely on optical or radar data provided by instruments on Earth.
Claudia Facchinetti   +2 more
exaly   +4 more sources

Machine Learning-Based Approach for Ballistic Coefficient Estimation of Resident Space Objects in LEO

open access: yesAdvances in Space Research, 2023
The increasing number of Resident Space Objects poses a serious threat to the safe operation of satellites. Alongside with mitigation policies, it is fundamental to predict the trajectories of such objects which requires the accurate estimation of the ...
Nicola Cimmino   +2 more
exaly   +2 more sources

The Ad Hoc Back-End of the BIRALET Radar to Measure Slant-Range and Doppler Shift of Resident Space Objects [PDF]

open access: yesElectronics, 2021
Space debris is a term for all human-made objects orbiting the Earth or reentering the atmosphere. The population of space debris is continuously growing and it represents a potential issue for active satellites and spacecraft.
Luca Schirru, Tonino Pisanu
exaly   +2 more sources

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